High reflectivity Bragg gratings have been written by ArF excimer laser through a phase mask into Schott IOG-1 hybrid phosphate glass. After grating exposure, a waveguide was fabricated by silver-sodium ion-exchange. Reflectivities around 80 % at a wavelength of ∼ 1535 nm were measured from the waveguide for both quasi-TE and -TM polarizations. Waveguide laser operation with the photowritten waveguide grating as another mirror was demonstrated. Output power of 3.8 mW with a pump power of 199 mW could be extracted from the laser configuration.

Optics Express
Department of Electronics

Yliniemi, S. (Sanna), Albert, J, Wang, Q. (Qing), & Honkanen, S. (Seppo). (2006). UV-exposed Bragg gratings for laser applications in silver-sodium ion-exchanged phosphate glass waveguides. Optics Express, 14(7), 2898–2903. doi:10.1364/OE.14.002898